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MultiPicture.cshtml

@using Nop.Core.Domain.Media
@model int
@inject MediaSettings mediaSettings

@{
    //other variables
    var random = CommonHelper.GenerateRandomInteger();
    var clientId = "picture" + random;
    var endpoint = ViewData["Endpoint"];
    var tableSelector = ViewData["TableSelector"];

    var allowedMimeTypes = new List<string> { MimeTypes.ImagePng, MimeTypes.ImageBmp, MimeTypes.ImageGif, MimeTypes.ImageJpeg, MimeTypes.ImagePJpeg, MimeTypes.ImageTiff, MimeTypes.ImageWebp };

    if (mediaSettings.AllowSvgUploads)
        allowedMimeTypes.Add(MimeTypes.ImageSvg);
}

<noscript>
    <p>Please enable JavaScript to use file uploader.</p>
</noscript>
<input type="hidden" asp-for="@Model"/>

<div id="@(clientId)element" class="filepond"></div>

@* register CSS and JS *@
<link rel="stylesheet" href="~/lib_npm/filepond/filepond.min.css" />
<script asp-exclude-from-bundle="true" src="~/lib_npm/filepond/filepond.min.js" asp-location="Footer"></script>
<script asp-exclude-from-bundle="true" src="~/lib_npm/filepond-plugin-file-validate-type/filepond-plugin-file-validate-type.min.js" asp-location="Footer"></script>

<script>
    $(function () {
        // Register the plugin
        FilePond.registerPlugin(FilePondPluginFileValidateType);
        const allowedExtensions = @Html.Raw(Json.Serialize(allowedMimeTypes));

        // Create a FilePond instance
        FilePond.create(document.querySelector('#@(clientId)element'), {
            credits: false,
            acceptedFileTypes: allowedExtensions,
            allowMultiple: true,
            allowRemove: false,
            allowRevert: false,
            server: {
                process:  (fieldName, file, metadata, load, error, progress, abort, transfer, options) => {
                    const formData = new FormData();
                    formData.append(fieldName, file, file.name);

                    const request = new XMLHttpRequest();
                    request.open('POST', '@endpoint');

                    request.upload.onprogress = (e) => {
                        progress(e.lengthComputable, e.loaded, e.total);
                    };

                    request.onload = function () {
                        const commonError = '@T("Common.Error")';

                        if (request.status < 200 || request.status >= 300) {
                            error(commonError);
                            return;
                        }

                        const r = JSON.parse(request.responseText);
                        if (!r.success) {
                            error(r.message || commonError);
                            return;
                        }

                        load(request.responseText);

                        if ('@tableSelector') {
                            updateTable('@tableSelector');
                        }
                    };

                    request.send(formData);
                }
            },
            labelIdle: '@T("Common.FileUploader.DropFiles") / <span class="filepond--label-action">@T("Common.FileUploader.Browse")</span>',
            labelFileProcessing: '@T("Common.FileUploader.Processing").Text',
            labelFileProcessingError: (err) => err.body
        });
    });
</script>